Integrated monitoring system for mining deep overlying strata and earth surface movement deformation of coal mine

Abstract

The invention provides a coal mine mining deep overlying strata and earth surface movement deformation integrated monitoring system, and relates to the technical field of coal mining subsidence area deep rock-soil body monitoring, the system comprises a plurality of double-end three-jaw hydraulic anchor flukes, a plurality of stay wire displacement sensors connected in parallel with double steel elastic sheets, a GNSS monitoring device and an overlying strata separation numerical value monitoring device, by collecting overlying strata movement deformation data and earth surface real-time movement deformation data, accurate monitoring of movement deformation values of monitoring points in the overlying strata and relative separation numerical values among the points in the overlying strata after coal mining is achieved. According to the coal mine mining deep overlying strata and earth surface movement deformation integrated monitoring system provided by the invention, a deep overlying strata movement deformation monitoring device and an orifice GNSS real-time monitoring system are integrated, an overlying strata movement deformation area can be partitioned, different levels of alarm prompts can be carried out, and further monitoring of a separation layer space in the overlying strata is realized.

Description

Technical Field

[0001] The invention relates to the technical field of deep rock and soil monitoring in coal mining subsidence areas, and in particular to an integrated monitoring system for deep overburden and surface movement deformation caused by coal mining. Background Art

[0002] When the mining space of the underground working face reaches a certain size, the overburden gradually bends, sinks, breaks, collapses, and accumulates in the goaf. As the mining size of the working face continues to increase, the movement and deformation of the lower rock layer gradually spreads upward from bottom to top. At the same time, due to the differences in lithology and the appearance of cracks and delamination spaces, the overburden rock and soil layers also show non-simultaneous, non-synchronous, and non-identical movement and deformation. The movement and deformation of the overburden rock and soil layers are reflected on the surface and manifested as surface subsidence.

[0003] At present, the monitoring areas for movement and deformation within the overlying rock and soil layers caused by coal mining are mainly concentrated on the roof and floor plates (the roof separation monitoring of the working face is about 4 times the height of the mining thickness, and the floor monitoring is about 30m deep) or only the movement and deformation monitoring of the surface.

[0004] There is no mature method and theory for monitoring the movement and deformation of the entire rock and soil layer from the old roof to the surface, nor is there a mature and stable monitoring system with a large range that can adapt to the violent movement and deformation of coal mines. At the same time, the current overburden movement and deformation monitoring equipment is independent of the common surface movement observation stations and GNSS continuous monitoring stations on the surface, and the two cannot achieve data integration and scientific unification. Therefore, the deformation data obtained based on the overburden movement and deformation monitoring equipment cannot achieve differentiated monitoring of the overburden interior, and it is impossible to further monitor the separation space. Summary of the invention

[0005] The present invention provides an integrated monitoring system for deep overburden and surface movement deformation in coal mining, which is used to solve the above problems existing in the prior art.

[0006] The present invention provides an integrated monitoring system for deep overburden and surface movement deformation in coal mining, comprising: a plurality of double-ended three-claw hydraulic anchor claws, a plurality of parallel double steel spring sheet pull-wire displacement sensors, a GNSS monitoring device and overburden separation numerical monitoring equipment; The double-ended three-claw hydraulic anchor claw and the parallel double steel spring piece pull-wire displacement sensor are used to collect overburden movement and deformation data; The GNSS monitoring equipment is used to collect real-time movement and deformation data of the surface; The GNSS monitoring device is also used to obtain the movement deformation value of the monitoring point inside the overburden rock based on the overburden rock movement deformation data and the real-time movement deformation data of the surface; the movement deformation value of the monitoring point inside the overburden rock is equal to the sum of the overburden rock movement deformation data and the real-time movement deformation data of the surface; The GNSS monitoring device is also used to divide the overburden movement deformation area into at least four zones of blue, yellow, orange and red based on the movement deformation values ​​of the monitoring points inside the overburden and to issue an alarm prompt; The overburden separation value monitoring device is used to calculate the relative separation value between two adjacent monitoring points in the overburden. The expression for calculating the relative separation value between two adjacent monitoring points in the overburden is as follows: W L =W i -W i-1 -H i-1→i ×K Ai

[0007] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

[0008] According to a coal mining deep overburden and surface movement deformation integrated monitoring system provided by the present invention, the double-ended three-claw hydraulic anchor claw includes a three-claw anchor claw located at the top and opened upward, and a three-claw anchor claw located at the bottom and opened downward, the three-claw anchor claws are connected by hydraulic pipes, and a hydraulic cylinder is provided inside the cylinder body of the double-ended three-claw hydraulic anchor claw, and the oil valve of the hydraulic cylinder is a mechanical cam.

[0009] According to the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention, the double-ended three-claw hydraulic anchor claw controls the opening and contraction of the anchor claw by hydraulic pressure; When the hydraulic cylinder is pressurized, the mechanical cam pushes upward to control the claw body of the fluke to retract; When the hydraulic cylinder is depressurized, the mechanical cam moves downward to control the opening of the claw body of the fluke.

[0010] According to the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention, the pull-wire displacement sensor with parallel double steel springs includes at least two parallel steel springs.

[0011] According to the integrated monitoring system for deep overburden and surface movement deformation of coal mining provided by the present invention, each double-ended three-claw hydraulic anchor claw is installed at different depths in the deep overburden of coal mining; Each double-ended three-claw hydraulic anchor claw is connected to each parallel double steel spring piece's pull-wire displacement sensor through a steel wire rope measuring line.

[0012] The present invention also provides a method for integrated monitoring of deep overburden and surface movement deformation in coal mining, comprising the following steps: Determine the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the movement deformation value of the monitoring point inside the overburden is obtained by the GNSS monitoring equipment based on the overburden movement deformation data and the real-time movement deformation data of the surface; the overburden movement deformation data is collected by a plurality of the double-ended three-claw hydraulic anchor claws and a plurality of parallel double steel spring sheet pull-wire displacement sensors; the real-time movement deformation data of the surface is collected by the GNSS monitoring equipment; Based on the displacement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claw installed at two adjacent monitoring points, the relative separation value between the two adjacent monitoring points inside the overburden is calculated; the expression for calculating the relative separation value between the two adjacent monitoring points inside the overburden is as follows: W L =W i -W i-1 -H i-1→i ×K Ai

[0013] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

[0014] The present invention also provides an integrated monitoring device for deep overburden and surface movement deformation in coal mining, comprising the following modules: A determination module is used to determine the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the movement deformation value of the monitoring point inside the overburden is obtained by the GNSS monitoring equipment based on the overburden movement deformation data and the real-time movement deformation data of the surface; the overburden movement deformation data is collected by a plurality of the double-ended three-claw hydraulic anchor claws and a plurality of parallel double steel spring sheet pull-wire displacement sensors; the real-time movement deformation data of the surface is collected by the GNSS monitoring equipment; The calculation module is used to calculate the relative separation value between two adjacent monitoring points in the overburden based on the movement deformation value of the monitoring point in the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points; the expression for calculating the relative separation value between two adjacent monitoring points in the overburden is as follows: W L =W i -W i-1 -H i-1→i ×K Ai

[0015] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

[0016] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the integrated monitoring method for deep overburden and surface movement deformation caused by coal mining is implemented.

[0017] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the integrated monitoring method for deep overburden and surface movement deformation in coal mining is implemented.

[0018] The present invention also provides a computer program product, including a computer program, which, when executed by a processor, implements the integrated monitoring method for deep overburden and surface movement deformation caused by coal mining.

[0019] The present invention provides an integrated monitoring system for deep overburden and surface movement and deformation in coal mining. The system collects overburden movement and deformation data through an improved double-end three-claw hydraulic anchor claw and a pull-wire displacement sensor with a parallel double steel spring piece, thereby improving the accuracy of real-time monitoring of overburden movement and deformation caused by coal mining; collects real-time surface movement and deformation data through a GNSS monitoring device and calculates the movement and deformation values ​​of monitoring points inside the overburden, thereby realizing real-time monitoring of the absolute movement and deformation of the deformation values ​​of the monitoring points inside the overburden, obtaining the true movement values ​​of the rock formation, and partitioning the overburden movement and deformation areas based on the movement and deformation values ​​of the monitoring points inside the overburden, and providing different levels of alarm prompts, thereby improving the safety and reliability of the coal mining process; through an overburden separation value monitoring device, and defining an expression for calculating the relative separation value between two adjacent monitoring points inside the overburden, accurate monitoring of the relative separation values ​​between each point in the overburden after coal mining is realized, thereby providing reliable data support for the utilization of the subsidence area and the control of the roof. The present invention provides an integrated monitoring system for deep overburden and surface movement and deformation in coal mining, which integrates the deep overburden movement and deformation monitoring equipment with the borehole GNSS real-time monitoring system. It has the advantages of a large monitoring range, the ability to adapt to various situations of drastic movement and deformation in coal mines, and high stability. It can realize differentiated monitoring of the interior of the overburden and further monitoring of the stratified space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The present invention provides a schematic diagram of the installation position of the anchor claws of the monitoring points in the integrated monitoring system for deep overburden and surface movement deformation in coal mining.

[0022] Figure 2 It is a schematic diagram of a GNSS monitoring substation of a monitoring point in the integrated monitoring system for deep overburden and surface movement deformation caused by coal mining provided by the present invention.

[0023] Figure 3 The present invention is a schematic diagram of the anchor claw structure in the integrated monitoring system for deep overburden and surface movement deformation in coal mining.

[0024] Figure 4 It is a schematic diagram of the mechanical cam controlling the contraction and expansion of the anchor claw in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention.

[0025] Figure 5 It is a schematic diagram of a wire displacement sensor of an expansion and parallel double rebound device in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention.

[0026] Figure 6 The present invention is a schematic diagram of an improved diameter change of a winding shaft of a wire displacement sensor in an integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention.

[0027] Figure 7 It is a schematic structural diagram of an internal pulley of a transmission line rod in an integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention.

[0028] Figure 8 It is a schematic diagram of the position of a fixed platform on a transmission line pole in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention.

[0029] Fig. 9 It is a flow chart of the integrated monitoring method for deep overburden and surface movement deformation in coal mining provided by the present invention.

[0030] Fig.10 It is a structural schematic diagram of the integrated monitoring device for deep overburden and surface movement deformation in coal mining provided by the present invention.

[0031] Fig.11 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0032] At present, the monitoring equipment for overburden separation during coal mining includes optical fiber small deformation monitoring equipment (range less than 20cm), layered settlement monitoring mark with radio frequency identification technology (range expanded to 50cm), wire displacement monitoring equipment with counting hub, separation monitoring method based on numerical simulation or similar material simulation, etc. This type of overburden layer monitoring equipment may only appear in theory, or the separation monitoring range is small, and it is impossible to scientifically monitor large-space separation. The overburden movement deformation caused by coal mining is large and violent, and the vertical separation space between adjacent rock and soil layers with large lithology differences may exceed 1~3m. It is necessary to develop an overburden movement monitoring system suitable for large deformation of coal mining, and develop corresponding software for separation identification and separation space data analysis.

[0033] Although the overburden movement and deformation monitoring equipment has been initially developed, the overburden movement and deformation caused by coal mines is from the coal seam roof to the ground surface, and the data acquisition end of each monitoring point of the overburden movement monitoring equipment is also located at the orifice or vicinity of the monitoring hole (due to the particularity of coal mining, the movement deformation of the monitoring points in each monitoring device is not relative to the coal seam floor); however, the movement deformation of each monitoring point of the overburden movement deformation is absolute, and is a relative comprehensive value of the overburden movement deformation and the surface movement deformation of the orifice. While monitoring the movement deformation of deep rock and soil, it is necessary to monitor the absolute displacement of the orifice in real time, and carry out high-precision acquisition and analysis of the absolute movement deformation data of the orifice + overburden, develop corresponding analysis software, and enrich the data post-processing work of the overburden movement and deformation monitoring system.

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Combine the following Figures 1 to 11 The invention describes an integrated monitoring system for deep overburden and surface movement deformation in coal mining.

[0036] Figure 1 This is a schematic diagram of the installation position of the anchor claws of the monitoring points in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention. Figure 2 FIG. 1 is a schematic diagram of a GNSS monitoring substation of a monitoring point in the integrated monitoring system for deep overburden and surface movement deformation caused by coal mining provided by the present invention. Figure 1 and Figure 2 As shown. Among them, Figure 2 The monitoring equipment indicated in the figure includes a plurality of wire displacement sensors with double steel springs connected in parallel.

[0037] The integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention comprises at least: a plurality of double-ended three-claw hydraulic anchor claws, a plurality of parallel double steel spring-piece pull-wire displacement sensors, a GNSS monitoring device and an overburden separation numerical monitoring device; The double-ended three-claw hydraulic anchor claw and the parallel double steel spring piece pull-wire displacement sensor are used to collect overburden movement and deformation data; The GNSS monitoring equipment is used to collect real-time movement and deformation data of the surface; The GNSS monitoring device is also used to obtain the movement deformation value of the monitoring point inside the overburden rock based on the overburden rock movement deformation data and the real-time movement deformation data of the surface; the movement deformation value of the monitoring point inside the overburden rock is equal to the sum of the overburden rock movement deformation data and the real-time movement deformation data of the surface; The GNSS monitoring device is also used to divide the overburden movement deformation area into at least four zones of blue, yellow, orange and red based on the movement deformation values ​​of the monitoring points inside the overburden and to issue an alarm prompt; The overburden separation value monitoring device is used to calculate the relative separation value between two adjacent monitoring points in the overburden. The expression for calculating the relative separation value between two adjacent monitoring points in the overburden is as follows: W L =W i -W i-1 -H i-1→i ×K Ai

[0038] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

[0039] Specifically, the monitoring system is installed to the designed depth along with the grouting drill pipe, the hydraulic oil pipe is cut, and the double-ended three-claw hydraulic anchor claws are automatically opened. At the same time, a special grouting pipe or grouting drill pipe is used to reinforce the anchoring of the monitoring point. On the one hand, it prevents the backflow of rock water into the goaf, and on the other hand, the anchoring force of the double-ended three-claw hydraulic anchor claws is anchored twice to prevent the expansion of the mining gap and affect the monitoring effect of the measuring point. Subsequently, a ground transmission line pole is set on the surface of the hole mouth, and a monitoring equipment fixing platform, power supply device, lightning protection device, data acquisition and real-time transmission device, etc. are set on the top of the line pole for real-time monitoring data acquisition and transmission of deep overburden monitoring equipment.

[0040] Optionally, the double-ended three-claw hydraulic anchor claw includes a three-claw anchor claw located at the top and opened upward, and a three-claw anchor claw located at the bottom and opened downward, and the three-claw anchor claws are connected by a hydraulic pipe. A hydraulic cylinder is provided inside the cylinder body of the double-ended three-claw hydraulic anchor claw, and the oil valve of the hydraulic cylinder is a mechanical cam.

[0041] Specifically, Figure 3 FIG. 1 is a schematic diagram of the anchor claw structure in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention. Figure 3 As shown. The existing anchor claw is a one-way single-end hydraulic anchor claw, such as Figure 3 As shown in (a) in the figure. When the equipment is installed, the hydraulic pipe connected to the hydraulic anchor claw can be cut off to control the anchor claw to open automatically.

[0042] The double-ended three-claw hydraulic anchor claw provided by the present invention can pop out a two-way double-ended hydraulic anchor claw, and the anchoring force is stronger. Figure 3 As shown in (b) in the figure. When the equipment is installed, the hydraulic pipe connected to the hydraulic anchor claw is cut off to control the anchor claw to open automatically. Since there are three-claw claws at both ends, the hydraulic anchor claw can tightly grasp the monitoring hole wall and deform with the rock formation.

[0043] Optionally, the double-ended three-claw hydraulic fluke controls the opening and contraction of the fluke by hydraulic pressure; When the hydraulic cylinder is pressurized, the mechanical cam pushes upward to control the claw body of the fluke to retract; When the hydraulic cylinder is depressurized, the mechanical cam moves downward to control the opening of the claw body of the fluke.

[0044] Specifically, the existing hydraulic anchor claw (continue to see Figure 3 In (a), after the ground is pressurized, the anchor claws are still in the open state, and the three claws need to be manually compressed to the retracted state; during the installation of the monitoring equipment on the construction site, the hydraulic oil pipes are sometimes damaged, causing the anchor claws to open. In particular, when the hydraulic anchor claws at some monitoring points have been lowered to a certain depth below the ground hole, the opened anchor claws cannot automatically retract after being reconnected to the hydraulic oil pipes on the ground, affecting the further installation of the equipment.

[0045] The double-ended three-claw hydraulic anchor claw provided by the present invention (see Figure 3(b)) in it includes a hydraulic oil pipe, which is connected to a double-ended three-claw hydraulic anchor claw; the hydraulic oil pipe is used to add hydraulic oil into the hydraulic oil pipe before the double-ended three-claw hydraulic anchor claw is placed in the drill hole, pressurize the claw body of the double-ended three-claw hydraulic anchor claw, so that the three-claw claw bodies at the upper and lower ends are contracted; after the double-ended three-claw hydraulic anchor claw is lowered to the preset depth of the drill hole, the hydraulic oil pipe is cut off, so that the three-claw claw bodies at the upper and lower ends automatically pop open and contact the rock formation of the borehole wall.

[0046] The embodiment of the present invention is based on the three-claw one-way hydraulic anchor claw in the prior art. By designing, improving and developing a new type of bidirectional double-end three-claw hydraulic anchor claw with automatic contraction and expansion and strong anchoring force, the accuracy of real-time monitoring of overburden movement and deformation caused by coal mining is improved.

[0047] Figure 4 It is a schematic diagram of the mechanical cam controlling the contraction and expansion of the anchor claw in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention. Figure 4 The double-ended three-claw hydraulic anchor claw provided by the present invention has a hydraulic oil cylinder added inside the hydraulic anchor claw cylinder body. The plunger after pressurization and depressurization pushes the connecting shaft to control the opening and contraction of the claw body, thereby realizing the full automation of hydraulically controlled opening and contraction of the anchor claw (the one-way oil valve is replaced by a mechanical cam control device, such as Figure 4 as shown).

[0048] In order to prevent shear damage to the steel strand caused by severe overburden deformation, the embodiment of the present invention also connects the developed mechanical cam-controlled bidirectional double-end hydraulic anchor claw to the high-strength steel strand, and the outer periphery of the steel strand is protected by an armored threading tube, and the threading tube is protected by a PPR tube. The diameter of the PPR material tube is smaller than the diameter of the claw body of the double-end three-claw hydraulic anchor claw when it is contracted.

[0049] Optionally, the parallel double steel spring wire displacement sensor includes at least two parallel steel springs.

[0050] Specifically, under different mining intensities, wire displacement sensors with different traction forces may be used. Figure 5 Schematic diagram of the wire displacement sensor of the expansion and parallel double rebound device in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention, such as Figure 5 As shown. The existing wire displacement sensor has a traction force of 9N and a single-layer steel spring (such as Figure 5 (as shown in (a) in the figure). Figure 6 Schematic diagram of the improvement of the diameter change of the winding shaft of the wire displacement sensor in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention, such as Figure 6The wire displacement sensor with parallel double steel springs provided by the present invention increases the thickness of the steel springs on the basis of the existing wire displacement sensor, that is, expands and parallel double rebound devices (the prototypes of the single rebound and double rebound devices are shown in Fig. Figure 5 (b) in the figure); at the same time, the diameter of the winding shaft is appropriately reduced to increase the traction force (according to the principle of equal torque, for the same rebound torque, the smaller the diameter, the greater the traction force required), so that it is suitable for the large traction force characteristics of coal mining. The improved winding shaft is as follows Figure 6 shown. Figure 6 The pulling force represented by F2 is the pulling force after the diameter of the winding shaft is reduced, and the pulling force represented by F1 is the pulling force before the diameter of the winding shaft is reduced. F2 is greater than F1.

[0051] Optionally, each double-ended three-claw hydraulic anchor claw is installed at different depths in the deep overburden of the coal mine; Each double-ended three-claw hydraulic anchor claw is connected to each parallel double steel spring piece's pull-wire displacement sensor through a steel wire rope measuring line.

[0052] Specifically, the installation position of each double-ended three-claw hydraulic anchor claw at different depths in the deep overburden of coal mining can be seen in Figure 1 The installation position of each parallel double steel spring wire displacement sensor can be found in Figure 2 .

[0053] Since the binding force between the steel spring and the rock layer is low, the friction force to resist the movement and deformation of the overburden is low, which often causes the measured value of the overburden movement and deformation to be much smaller than the actual movement and deformation value. However, the double-ended three-claw hydraulic anchor claw can still be in close contact with the overburden after the overburden moves and deforms. Therefore, this embodiment uses the double-ended three-claw hydraulic anchor claw as a monitoring point for deep overburden movement and deformation.

[0054] In this embodiment, in order to ensure the strength of the wire rope measuring line, a wire rope measuring line with a larger diameter is selected, and the diameter range is 1.2 to 2.0 mm, such as 1.5 mm. The range of the wire displacement sensor is determined according to the average mining thickness and mining depth of the working face. For example, if the average mining thickness of the working face is 9m and the mining depth is 140m, the range of the wire displacement sensor is determined to be 10m.

[0055] In addition, the number of double-ended three-claw hydraulic anchor claws, wire rope measuring lines and parallel double steel spring sheet pull-wire displacement sensors used in this embodiment is the same and corresponds one to one; each double-ended three-claw hydraulic anchor claw is respectively arranged at different depths of the borehole in the overburden of the coal mine mining, and contacts the rock layer of the borehole wall under the elastic force of the double-ended three-claw hydraulic anchor claw.

[0056] The depth and diameter of the ground borehole are designed according to the outer diameter of the monitoring equipment placed in the borehole and the requirements for the hole slope. For example, the borehole opening diameter is not less than Ф168mm, and the hole diameter is not less than Ф127mm. The borehole deviation rate is less than 0.02. Use Ф127 to 146mm rope drilling tools, concrete cementing and bare drilling within about 10m of the surface soil section, and the surface soil section is required to be without casing.

[0057] After the drilling project is completed, the borehole is cleaned with clean water or circulating slurry with added chemical reagents to reduce the precipitation of rock powder in the hole and the resistance during equipment installation.

[0058] A plurality of monitoring points for deep overburden stratification in coal mining operations are set up, such as 8 to 16, which can be increased or decreased according to actual needs.

[0059] Each double-ended three-claw hydraulic anchor claw is connected to a different wire rope measuring line. The length of the wire rope measuring line is determined according to the depth of each monitoring point. Each wire rope measuring line is connected to a different parallel double steel shrapnel pull-wire displacement sensor. One end of each wire rope measuring line is connected to the double-ended three-claw hydraulic anchor claw, and the other end is connected to the parallel double steel shrapnel pull-wire displacement sensor. The wire rope measuring line serves as the measuring line of the parallel double steel shrapnel pull-wire displacement sensor. The parallel double steel shrapnel pull-wire displacement sensor tightens the wire rope measuring line, so that the wire rope measuring line is in a vertical and taut state.

[0060] When the rock formation at the hole wall contacted by the double-ended three-claw hydraulic anchor claw moves and deforms, the double-ended three-claw hydraulic anchor claw moves and deforms synchronously with the movement and deformation of the rock formation at the hole wall. The wire rope measuring line connected to the double-ended three-claw hydraulic anchor claw transmits the displacement of the double-ended three-claw hydraulic anchor claw to the wire displacement sensor of the parallel double steel spring piece to obtain the movement and deformation data of the overburden rock.

[0061] The measuring range of the pull-wire sensor with double steel springs in parallel can be selected as needed. In order to measure the displacement of the overburden with large deformation, a pull-wire sensor with double steel springs in parallel with a larger measuring range is selected.

[0062] The embodiment provided by the present invention sets a double-ended three-claw hydraulic anchor claw at each monitoring point in the borehole of the overburden in the coal mine, and connects the two ends of the wire rope measuring line to the double-ended three-claw hydraulic anchor claw and the wire displacement sensor of the parallel double steel spring respectively, so as to serve as the measuring line of the wire displacement sensor of the parallel double steel spring. Since the double-ended three-claw hydraulic anchor claw has strong anchoring force and good retractability, when the overburden moves and deforms, the double-ended three-claw hydraulic anchor claw moves and deforms synchronously, and is always in close contact with the overburden on the hole wall, so that the wire displacement sensor of the parallel double steel spring can accurately monitor the displacement of the overburden, and the wire displacement sensor of the parallel double steel spring has a large measuring range, and can be applicable to displacement monitoring of various severe deformations and large depths, and has universal applicability.

[0063] Figure 7 Schematic diagram of the structure of the internal pulley of the transmission line rod in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention, such as Figure 7 As shown. This embodiment also includes a transmission line rod, and pulleys are added on one or more planes at a certain height of the inner wall of the transmission line rod. A set of pulleys is added on each plane, and the pulleys are fixed on the inner wall of the transmission line rod through a bracket. Figure 7 As shown in FIG. 1 , four pulleys are evenly arranged on a plane on the inner wall of the transmission line rod. The wire rope is wound in the outer groove of the pulley to achieve the displacement transmission and direction change of the wire rope and increase the stability of the end of the wire rope at the borehole.

[0064] On the basis of the above embodiment, the invention further comprises a fixed platform. Figure 8 FIG. 1 is a schematic diagram of the position of the fixed platform on the transmission line pole in the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention. Figure 8 shown. Figure 8 The wire-drawing displacement sensor is a wire-drawing displacement sensor with a parallel double steel spring. The fixed platform includes a plurality of flat plates and a flat plate fixing support column. The wire-drawing displacement sensor with a parallel double steel spring is fixed on the flat plate. A through hole is provided in the middle of each flat plate. The plurality of flat plates are arranged in parallel along the axial direction of the transmission line rod, and two adjacent flat plates are fixedly connected by a flat plate fixing support column. The flat plates at both ends are fixed on the transmission line rod at a position higher than the pulley, and the through holes of the flat plates are aligned with the through holes of the transmission line rod, so that the steel wire rope measuring line passes through the transmission line rod and is connected to the wire-drawing displacement sensor with a parallel double steel spring.

[0065] The fixed platform is located in the middle and upper part of the transmission line pole. It has two layers and is formed by three parallel flat plates. The flat plates are fixed by welding steel bars. The thickness of the flat plate steel is relatively large, such as greater than 4mm, to ensure the stability of the parallel double steel spring wire displacement sensor during the wire pulling process.

[0066] Each fixed platform is drilled according to the geometric dimensions of the parallel double steel spring wire displacement sensor using a CNC machine tool, and then the parallel double steel spring wire displacement sensor is fixed on the fixed platform. The parallel double steel spring displacement sensors of the same layer are evenly arranged on the same flat plate.

[0067] The embodiment of the present invention further adds a PPR material tube of a certain diameter to the outside of the armored threading pipes of several wire rope measuring lines for protection, thereby providing secondary protection for the wire rope measuring lines and the armored threading pipes, further ensuring the successful acquisition of displacement data under large-scale and severe mining conditions.

[0068] The total length of the PPR material pipe is equal to the distance between two adjacent double-ended three-claw hydraulic anchor claws; the wire rope measuring lines of all double-ended three-claw hydraulic anchor claws located between two adjacent double-ended three-claw hydraulic anchor claws pass through the PPR material pipe located between two adjacent double-ended three-claw hydraulic anchor claws, and each double-ended three-claw hydraulic anchor claw is clamped between two adjacent sections of PPR material pipe.

[0069] PPR pipes are also used to integrate all wire rope measuring lines and double-ended three-claw hydraulic anchor claws, and to fix the double-ended three-claw hydraulic anchor claws, so as to facilitate the lowering of the double-ended three-claw hydraulic anchor claws and determine the lowering depth of the double-ended three-claw hydraulic anchor claws, and ensure the installation of the monitoring system and the monitoring success rate.

[0070] The overburden movement deformation data obtained by existing overburden movement deformation monitoring equipment (including roof and floor deformation monitoring equipment for underground monitoring) are all relative to the surface or the roof and floor of the coal seam, and are not the actual movement value of the rock formation. Therefore, in order to monitor the actual deformation value of the monitoring point inside the overburden, in the embodiment of the present invention, a GNSS monitoring device is also introduced.

[0071] GNSS monitoring equipment is used to collect real-time movement and deformation data of the surface.

[0072] The GNSS monitoring equipment is also used to obtain the movement deformation value of the monitoring point inside the overburden based on the overburden movement deformation data and the real-time movement deformation data of the surface; the movement deformation value of the monitoring point inside the overburden is equal to the sum of the overburden movement deformation data and the real-time movement deformation data of the surface.

[0073] By adding GNSS monitoring equipment for real-time surface movement and deformation to the overburden movement and deformation monitoring system (including GNSS monitoring base station and GNSS observation station, the installation diagram of the transmission line pole can be seen in Figure 2 ), a single base station is used for monitoring, that is, a base station is built in a stable area; the monitoring station in the monitoring area performs high-precision static post-calculation based on the base station. For example, when the distance L between the position of the GNSS monitoring base station and the working measuring point of the monitoring orifice is 01 =2km, the accuracy of coordinate and deformation calculation of the monitoring station in the monitoring area is: ±(2.5mm+0.5×10 -6 ×L 01 )=±(2.5mm+0.5×10 -6 ×2km)=±3.5mm. After static post-processing, the kilometer-level calculation accuracy can be improved to millimeter-level accuracy.

[0074] Then, the movement values ​​of all monitoring points inside the overburden will be solved relative to the surface monitoring points to obtain their relative movement deformation values, that is, the deformation values ​​of the monitoring points inside the overburden are equal to the sum of the deformation data of the overburden movement deformation sensor and the deformation data of the GNSS observation station. In other words, in order to monitor the real deformation values ​​of the monitoring points inside the overburden, the relative movement deformation values ​​relative to the surface monitoring points are solved by the GNSS monitoring equipment at the monitoring stations in the monitoring area, and are used as the deformation data of the GNSS observation station; the overburden movement deformation data are jointly collected by the double-end three-claw hydraulic anchor claws and the parallel double steel spring sheet pull-wire displacement sensor. The specific process can be referred to the above embodiment and will not be repeated here; the deformation data of the overburden movement deformation sensor and the deformation data of the GNSS observation station are summed by the computing system in the GNSS monitoring equipment to obtain the deformation values ​​of the monitoring points inside the overburden.

[0075] The GNSS monitoring device provided by the present invention has the Beidou high-precision positioning function. Beidou high-precision positioning is to measure the spatial transmission error between the satellite and the receiver by setting a reference station, and then eliminate or weaken this part of the error when solving the problem at the monitoring station, so as to obtain higher relative positioning accuracy.

[0076] Specifically, the deformation monitoring technology based on the Beidou / GNSS satellite system also uses relative measurement technology as its basic principle. A highly stable GNSS base station is fixed near the deformation point, and satellite ranging signals at the base station and the monitoring point are collected at the same time. The relative positioning principle is used to calculate the relative displacement change of the monitoring point relative to the base station in order to achieve the purpose of observing the effective displacement change of the monitoring point. The data processing methods can be divided into dynamic real-time solution (centimeter to sub-centimeter accuracy) and static post-processing solution (millimeter to sub-millimeter accuracy).

[0077] The embodiment of the present invention integrates the deep overburden movement deformation monitoring equipment with the borehole GNSS real-time monitoring system to achieve real-time monitoring of the absolute movement deformation of the deformation value of the monitoring point inside the overburden, that is, real-time monitoring of the actual movement value of the rock formation.

[0078] Therefore, compared with the overburden movement and deformation data monitored by existing overburden movement and deformation monitoring equipment (including top and bottom plate deformation monitoring equipment for underground monitoring), the deformation values ​​of the internal monitoring points of the overburden obtained by monitoring and calculating with GNSS monitoring equipment in the present invention have higher accuracy.

[0079] The GNSS monitoring equipment is also used to divide the overburden movement deformation area into at least four zones: blue, yellow, orange and red, based on the movement deformation values ​​of the monitoring points inside the overburden, and to issue alarm prompts; In the embodiment of the present invention, combined with the real-time data transmitted by the deep overburden movement and deformation monitoring equipment, based on the monitoring purpose, the movement and deformation levels of different depths and intensities in the overburden are set, and warning levels are set for different movement and deformation levels: four warning levels in total: blue, yellow, orange, and red (under other conditions, more and more detailed partitions can also be set according to actual conditions, which is not limited in this embodiment).

[0080] When setting the warning level, the following factors can also be considered in the human-computer interaction interface for reasonable settings: the geological mining conditions of each coal mine (especially coal mining thickness, coal mining methods), open-pit mine slopes and other geological conditions of adverse geological bodies are different. For different geological mining conditions, the input settings of the movement deformation values ​​of the overlying rock and soil layers corresponding to different movement deformation levels are added, thereby realizing the setting of different warning level values ​​in the human-computer interaction interface.

[0081] The blue partition corresponds to the conventional monitoring area for mobile deformation (the area with a sinking of less than 10mm), the yellow partition corresponds to the prevention area for mobile deformation (from the 10mm line to the horizontal deformation of 2mm / m), the orange partition corresponds to the early warning area for mobile deformation (corresponding to 80% of the mobile deformation control value under the building category, the area is the key monitoring area; the horizontal deformation of 2mm / m to the crack angle influence area), and the red partition corresponds to the emergency treatment area for mobile deformation (corresponding to 90% of the mobile deformation control value under the building category, the area is the key and densely monitored area, the cause should be analyzed and the corresponding deformation control or ground building treatment measures should be formulated; the crack angle influence area). When the deformation value reaches a certain level, an alarm will be given on the client software surface or the top of the transmission line pole (acoustic and optical devices).

[0082] In the integrated monitoring system for deep overburden and surface movement deformation in coal mining provided by the present invention, an overburden separation numerical monitoring device is also introduced to calculate the relative separation value between two adjacent monitoring points inside the overburden. With the advancement of coal mining work, the direct roof and the old roof often deform. Before the direct roof spans down, both the direct roof and the old roof have a maximum deflection. If the maximum deflection of the direct roof is greater than the maximum deflection of the old roof, separation will occur, that is, the direct roof and the old roof will separate from each other, thereby generating a separation space. In order to accurately monitor the size value of this separation space, an overburden separation numerical monitoring device is used, and an expression for calculating the relative separation value between two adjacent monitoring points inside the overburden is defined in the overburden separation numerical monitoring device.

[0083] The overburden separation value monitoring device is used to calculate the relative separation value between two adjacent monitoring points in the overburden. The expression for calculating the relative separation value between two adjacent monitoring points in the overburden is as follows: W L =Wi -W i-1 -H i-1→i ×K Ai

[0084] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to two adjacent monitoring points.

[0085] Based on the movement deformation data of each monitoring point inside the overburden (W i With W i-1 ), according to the rock expansion coefficient K between adjacent rock and soil layers Ai , installation depth of adjacent monitoring points (H i With H i-1 ), the thickness of the rock and soil layer between adjacent monitoring points H i-1→i (H i-1→i =H i -H i-1 ), define the numerical calculation formula W of the separation layer between adjacent monitoring points L =W i -W i-1 -H i-1→i ×K Ai Scientifically monitoring the relative separation values ​​between various points in the overburden after coal mining can provide data support for the utilization of subsidence areas and roof control.

[0086] The above-mentioned various improved equipment, improved supporting devices, deformation algorithm analysis, movement deformation value control setting and early warning zoning, overburden separation data analysis, and other auxiliary supporting devices, under the guidance of scientific installation technology, together constitute the integrated monitoring system for deep overburden and surface movement deformation of coal mining of the present invention.

[0087] The present invention provides an integrated monitoring system for deep overburden and surface movement and deformation in coal mining. The improved double-end three-claw hydraulic anchor claw and the pull-wire displacement sensor with parallel double steel spring pieces are used to jointly collect overburden movement and deformation data, thereby improving the accuracy of real-time monitoring of overburden movement and deformation caused by coal mining; the real-time surface movement and deformation data are collected by GNSS monitoring equipment and the movement and deformation values ​​of monitoring points inside the overburden are calculated, and the deep overburden movement and deformation monitoring equipment is integrated with the hole mouth GNSS real-time monitoring system to realize real-time monitoring of the absolute movement and deformation of the deformation values ​​of the monitoring points inside the overburden, obtain the real movement values ​​of the rock formation, and divide the overburden movement and deformation areas based on the movement and deformation values ​​of the monitoring points inside the overburden and provide different levels of alarm prompts, thereby improving the safety and reliability of the coal mining process; the overburden separation value monitoring equipment is used, and an expression for calculating the relative separation value between two adjacent monitoring points inside the overburden is defined, thereby realizing accurate monitoring of the relative separation values ​​between various points in the overburden after coal mining, thereby providing reliable data support for the utilization of the subsidence area and the control of the roof.

[0088] The following is a description of an integrated monitoring method for deep overburden and surface movement deformation in coal mine mining provided by the present invention. The integrated monitoring method for deep overburden and surface movement deformation in coal mine mining described below and the integrated monitoring system for deep overburden and surface movement deformation in coal mine mining described above can be referenced to each other.

[0089] Fig. 9 FIG. 1 is a flow chart of the integrated monitoring method for deep overburden and surface movement deformation of coal mining provided by the present invention, such as Fig. 9 The present invention provides a method for integrated monitoring of deep overburden and surface movement deformation in coal mining, comprising the following steps: Step 901, determining the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the movement deformation value of the monitoring point inside the overburden is obtained by summing the overburden movement deformation data and the real-time movement deformation data of the surface based on the GNSS monitoring equipment; the overburden movement deformation data is collected by a plurality of the double-ended three-claw hydraulic anchor claws and a plurality of parallel double steel spring sheet pull-wire displacement sensors; the real-time movement deformation data of the surface is collected by the GNSS monitoring equipment; Step 902: Calculate the relative separation value between two adjacent monitoring points in the overburden based on the displacement deformation value of the monitoring point in the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points. The expression for calculating the relative separation value between two adjacent monitoring points in the overburden is as follows: W L =W i -Wi-1 -H i-1→i ×K Ai

[0090] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

[0091] The present invention provides an integrated monitoring method for deep overburden and surface movement and deformation in coal mining. The method collects overburden movement and deformation data through an improved double-end three-claw hydraulic anchor claw and a pull-wire displacement sensor with a parallel double steel spring piece, thereby improving the accuracy of real-time monitoring of overburden movement and deformation caused by coal mining; collects surface real-time movement and deformation data through a GNSS monitoring device and calculates the movement and deformation values ​​of monitoring points inside the overburden, integrates the deep overburden movement and deformation monitoring device with the borehole GNSS real-time monitoring system, realizes real-time monitoring of the absolute movement and deformation of the deformation values ​​of the monitoring points inside the overburden, obtains the true movement value of the rock formation, and divides the overburden movement and deformation area based on the movement and deformation values ​​of the monitoring points inside the overburden, and performs alarm prompts of different levels, thereby improving the safety and reliability of the coal mining process; uses an overburden separation value monitoring device and defines an expression for calculating the relative separation value between two adjacent monitoring points inside the overburden, thereby realizing accurate monitoring of the relative separation values ​​between each point in the overburden after coal mining, thereby providing reliable data support for the utilization of the subsidence area and the control of the roof.

[0092] The following is a description of an integrated monitoring device for deep overburden and surface movement deformation in coal mine mining provided by the present invention. The integrated monitoring device for deep overburden and surface movement deformation in coal mine mining described below and the integrated monitoring method for deep overburden and surface movement deformation in coal mine mining described above can be referenced to each other.

[0093] Fig.10 Schematic diagram of the structure of the integrated monitoring device for deep overburden and surface movement deformation in coal mining provided by the present invention. Fig.10The embodiment of the present invention provides an integrated monitoring device for deep overburden and surface movement deformation in coal mining, including a determination module 1001 and a calculation module 1002, wherein: The determination module 1001 is used to determine the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the movement deformation value of the monitoring point inside the overburden is obtained by the GNSS monitoring device based on the overburden movement deformation data and the real-time movement deformation data of the surface; the overburden movement deformation data is collected by a plurality of the double-ended three-claw hydraulic anchor claws and a plurality of parallel double steel spring sheet pull-wire displacement sensors; the real-time movement deformation data of the surface is collected by the GNSS monitoring device; the calculation module 1002 is used to calculate the relative separation value between two adjacent monitoring points inside the overburden based on the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the expression for calculating the relative separation value between two adjacent monitoring points inside the overburden is as follows: W L =W i -W i-1 -H i-1→i ×K Ai

[0094] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

[0095] The present invention provides an integrated monitoring device for deep overburden and surface movement and deformation in coal mining. The device collects overburden movement and deformation data through an improved double-end three-claw hydraulic anchor claw and a pull-wire displacement sensor with a parallel double steel spring piece, thereby improving the accuracy of real-time monitoring of overburden movement and deformation caused by coal mining; collects surface real-time movement and deformation data through a GNSS monitoring device and calculates the movement and deformation values ​​of monitoring points inside the overburden, integrates the deep overburden movement and deformation monitoring device with the borehole GNSS real-time monitoring system, realizes real-time monitoring of the absolute movement and deformation of the deformation values ​​of the monitoring points inside the overburden, obtains the true movement value of the rock formation, and divides the overburden movement and deformation area based on the movement and deformation values ​​of the monitoring points inside the overburden, and performs alarm prompts of different levels, thereby improving the safety and reliability of the coal mining process; through an overburden separation value monitoring device, and defines an expression for calculating the relative separation value between two adjacent monitoring points inside the overburden, accurate monitoring of the relative separation values ​​between each point in the overburden after coal mining is realized, thereby providing reliable data support for the utilization of the subsidence area and the control of the roof.

[0096] Fig.11 An example of a physical structure diagram of an electronic device is shown in FIG. Fig.11 As shown, the electronic device may include: a processor 1110, a communications interface 1120, a memory 1130 and a communication bus 1140, wherein the processor 1110, the communications interface 1120 and the memory 1130 communicate with each other through the communication bus 1140. The processor 1110 may call the logic instructions in the memory 1130 to execute the integrated monitoring method for deep overburden and surface movement deformation in coal mining, the method comprising: Determine the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the movement deformation value of the monitoring point inside the overburden is obtained by the GNSS monitoring equipment based on the overburden movement deformation data and the real-time movement deformation data of the surface; the overburden movement deformation data is collected by a plurality of the double-ended three-claw hydraulic anchor claws and a plurality of parallel double steel spring sheet pull-wire displacement sensors; the real-time movement deformation data of the surface is collected by the GNSS monitoring equipment; Based on the displacement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claw installed at two adjacent monitoring points, the relative separation value between the two adjacent monitoring points inside the overburden is calculated; the expression for calculating the relative separation value between the two adjacent monitoring points inside the overburden is as follows: W L =W i -W i-1-H i-1→i ×K Ai

[0097] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

[0098] In addition, the logic instructions in the above-mentioned memory 1130 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0099] On the other hand, the present invention further provides a computer program product, the computer program product comprising a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can execute the integrated monitoring method for deep overburden and surface movement deformation caused by coal mining provided by the above methods, the method comprising: Determine the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the movement deformation value of the monitoring point inside the overburden is obtained by the GNSS monitoring equipment based on the overburden movement deformation data and the real-time movement deformation data of the surface; the overburden movement deformation data is collected by a plurality of the double-ended three-claw hydraulic anchor claws and a plurality of parallel double steel spring sheet pull-wire displacement sensors; the real-time movement deformation data of the surface is collected by the GNSS monitoring equipment; Based on the displacement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claw installed at two adjacent monitoring points, the relative separation value between the two adjacent monitoring points inside the overburden is calculated; the expression for calculating the relative separation value between the two adjacent monitoring points inside the overburden is as follows: W L =W i -W i-1 -H i-1→i ×K Ai

[0100] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

[0101] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to execute the integrated monitoring method for deep overburden and surface movement deformation of coal mining provided by the above methods, the method comprising: Determine the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the movement deformation value of the monitoring point inside the overburden is obtained by the GNSS monitoring equipment based on the overburden movement deformation data and the real-time movement deformation data of the surface; the overburden movement deformation data is collected by a plurality of the double-ended three-claw hydraulic anchor claws and a plurality of parallel double steel spring sheet pull-wire displacement sensors; the real-time movement deformation data of the surface is collected by the GNSS monitoring equipment; Based on the displacement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claw installed at two adjacent monitoring points, the relative separation value between the two adjacent monitoring points inside the overburden is calculated; the expression for calculating the relative separation value between the two adjacent monitoring points inside the overburden is as follows: W L =W i -W i-1 -H i-1→i ×KAi

[0102] Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

[0103] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0104] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0105] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0106] "Determine B based on A" in the embodiments of the present application means that the factor A should be considered when determining B. It is not limited to "B can be determined based on A alone", but should also include: "Determine B based on A and C", "Determine B based on A, C and E", "Determine C based on A, and further determine B based on C", etc. In addition, it can also include taking A as a condition for determining B, for example, "When A meets the first condition, use the first method to determine B"; for another example, "When A meets the second condition, determine B", etc.; for another example, "When A meets the third condition, determine B based on the first parameter", etc. Of course, it can also be a condition that takes A as a factor for determining B, for example, "When A meets the first condition, use the first method to determine C, and further determine B based on C", etc.

[0107] In the present invention, the term "plurality" refers to two or more than two, and other quantifiers are similar to them.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated monitoring system for deep overburden and surface movement deformation in coal mining, characterized in that: include: Multiple double-ended three-claw hydraulic anchor claws, multiple parallel double steel spring wire displacement sensors, GNSS monitoring equipment and overburden separation numerical monitoring equipment; The double-ended three-claw hydraulic anchor claw and the parallel double steel spring piece pull-wire displacement sensor are used to collect overburden movement and deformation data; The GNSS monitoring equipment is used to collect real-time movement and deformation data of the surface; The GNSS monitoring device is also used to obtain the movement deformation value of the monitoring point inside the overburden rock based on the overburden rock movement deformation data and the real-time movement deformation data of the surface; the movement deformation value of the monitoring point inside the overburden rock is equal to the sum of the overburden rock movement deformation data and the real-time movement deformation data of the surface; The GNSS monitoring device is also used to divide the overburden movement deformation area into at least four zones of blue, yellow, orange and red based on the movement deformation values ​​of the monitoring points inside the overburden and to issue an alarm prompt; The overburden separation value monitoring device is used to calculate the relative separation value between two adjacent monitoring points in the overburden. The expression for calculating the relative separation value between two adjacent monitoring points in the overburden is as follows: W L =W i -W i-1 -H i-1→i ×K Ai Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

2. The integrated monitoring system for deep overburden and surface movement deformation in coal mining according to claim 1 is characterized in that: The double-ended three-claw hydraulic anchor claw comprises a three-claw anchor claw located at the top and opened upward, and a three-claw anchor claw located at the bottom and opened downward, the three-claw anchor claws are connected by a hydraulic pipe, a hydraulic cylinder is arranged inside the cylinder body of the double-ended three-claw hydraulic anchor claw, and the oil valve of the hydraulic cylinder is a mechanical cam.

3. The integrated monitoring system for deep overburden and surface movement deformation in coal mining according to claim 2 is characterized in that: The double-ended three-claw hydraulic anchor claw controls the opening and contraction of the anchor claw by hydraulic pressure; When the hydraulic cylinder is pressurized, the mechanical cam pushes upward to control the claw body of the fluke to retract; When the hydraulic cylinder is depressurized, the mechanical cam moves downward to control the opening of the claw body of the fluke.

4. The integrated monitoring system for deep overburden and surface movement deformation in coal mining according to claim 1 is characterized in that: The parallel double steel springs pull-wire displacement sensor comprises at least two parallel steel springs.

5. The integrated monitoring system for deep overburden and surface movement deformation in coal mining according to claim 1 is characterized in that: Each double-ended three-claw hydraulic anchor claw is installed at different depths in the deep overburden of the coal mine; Each double-ended three-claw hydraulic anchor claw is connected to each parallel double steel spring piece's pull-wire displacement sensor through a steel wire rope measuring line.

6. A method for integrated monitoring of deep overburden and surface movement deformation caused by coal mining based on the integrated monitoring system for deep overburden and surface movement deformation caused by coal mining according to any one of claims 1 to 5, characterized in that: include: Determine the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the movement deformation value of the monitoring point inside the overburden is obtained by the GNSS monitoring equipment based on the overburden movement deformation data and the real-time movement deformation data of the surface; the overburden movement deformation data is collected by a plurality of the double-ended three-claw hydraulic anchor claws and a plurality of parallel double steel spring sheet pull-wire displacement sensors; the real-time movement deformation data of the surface is collected by the GNSS monitoring equipment; Based on the displacement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claw installed at two adjacent monitoring points, the relative separation value between the two adjacent monitoring points inside the overburden is calculated; the expression for calculating the relative separation value between the two adjacent monitoring points inside the overburden is as follows: W L =W i -W i-1 -H i-1→i ×K Ai Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

7. An integrated monitoring device for deep overburden and surface movement deformation in coal mining, characterized in that: include: A determination module is used to determine the movement deformation value of the monitoring point inside the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at two adjacent monitoring points; the movement deformation value of the monitoring point inside the overburden is obtained by the GNSS monitoring equipment based on the overburden movement deformation data and the real-time movement deformation data of the surface; the overburden movement deformation data is collected by a plurality of the double-ended three-claw hydraulic anchor claws and a plurality of parallel double steel spring sheet pull-wire displacement sensors; the real-time movement deformation data of the surface is collected by the GNSS monitoring equipment; The calculation module is used to calculate the relative separation value between two adjacent monitoring points in the overburden based on the movement deformation value of the monitoring point in the overburden and the installation depth of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points; the expression for calculating the relative separation value between two adjacent monitoring points in the overburden is as follows: W L =W i -W i-1 -H i-1→i ×K Ai Among them, W L represents the separation value between two adjacent monitoring points, W i With W i-1 They represent the displacement values ​​of two adjacent monitoring points inside the overburden, and the thickness of the rock layer between the two adjacent monitoring points H i-1→i =H i -H i-1 , H i With H i-1 They represent the installation depths of the double-ended three-claw hydraulic anchor claws installed at the two adjacent monitoring points, K Ai It represents the rock expansion coefficient between two adjacent rock and soil layers corresponding to the two adjacent monitoring points.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the integrated monitoring method for deep overburden and surface movement deformation caused by coal mining as described in claim 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, the integrated monitoring method for deep overburden and surface movement deformation caused by coal mining as described in claim 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by the processor, the integrated monitoring method for deep overburden and surface movement deformation caused by coal mining as described in claim 6 is implemented.

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